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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Koolan Threshold Days by Year (KZ000038343)

12 fixed thresholds counted per year at Koolan (KZ000038343): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Koolan Thresholds

  • Koolan: days with 10 mm (0.39 in) or more of precipitation in 33 years, most in 1958 with 12.
  • Koolan: days with a maximum temperature at or above 30 C (86 F) in 23 years, most in 2008 with 95.
  • Koolan: days with a maximum temperature at or above 35 C (95 F) in 23 years, most in 2023 with 34.
  • Koolan: days with a maximum temperature at or above 90 F (32.2 C) in 23 years, most in 2021 with 64.
  • 12 fixed thresholds have at least one qualifying day at Koolan.
23 years with a qualifying day
Days at or above 30 C (86 F) per year at Koolan Days per year at Koolan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 95 in 2008. 02550751002003: 572004: 762005: 802006: 732007: 802008: 952009: 582010: 712011: 782012: 822013: 702014: 772015: 772016: 722017: 692018: 642019: 692020: 672021: 922022: 792023: 772024: 662025: 8220032006200920122015201820212024
Days per year at Koolan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 95 in 2008.
Days at or above 30 C (86 F) per year at Koolan
YearDaysDecade average
20035774.1
20047674.1
20058074.1
20067374.1
20078074.1
20089574.1
20095874.1
20107172.9
20117872.9
20128272.9
20137072.9
20147772.9
20157772.9
20167272.9
20176972.9
20186472.9
20196972.9
20206777.2
20219277.2
20227977.2
20237777.2
20246677.2
20258277.2
First to last qualifying date each year at Koolan For each year, a bar from the first to the last day at Koolan meeting 30 C (86 F). 2003: 17 June 2003 to 20 September 20032004: 15 May 2004 to 5 October 20042005: 29 May 2005 to 17 September 20052006: 27 April 2006 to 12 September 20062007: 13 April 2007 to 18 September 20072008: 8 May 2008 to 16 September 20082009: 28 May 2009 to 1 October 20092010: 9 June 2010 to 3 October 20102011: 14 April 2011 to 2 October 20112012: 20 April 2012 to 12 September 20122013: 18 May 2013 to 6 October 20132014: 25 May 2014 to 26 September 20142015: 23 April 2015 to 9 October 20152016: 2 June 2016 to 22 September 20162017: 13 May 2017 to 10 September 20172018: 24 April 2018 to 19 September 20182019: 29 May 2019 to 27 September 20192020: 24 April 2020 to 4 September 20202021: 28 April 2021 to 26 September 20212022: 26 May 2022 to 26 September 20222023: 14 April 2023 to 11 September 20232024: 9 May 2024 to 31 August 20242025: 27 April 2025 to 7 September 202520032006200920122015201820212024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Koolan meeting 30 C (86 F).
First to last qualifying date each year at Koolan
YearFirst dateLast date
20032003-06-172003-09-20
20042004-05-152004-10-05
20052005-05-292005-09-17
20062006-04-272006-09-12
20072007-04-132007-09-18
20082008-05-082008-09-16
20092009-05-282009-10-01
20102010-06-092010-10-03
20112011-04-142011-10-02
20122012-04-202012-09-12
20132013-05-182013-10-06
20142014-05-252014-09-26
20152015-04-232015-10-09
20162016-06-022016-09-22
20172017-05-132017-09-10
20182018-04-242018-09-19
20192019-05-292019-09-27
20202020-04-242020-09-04
20212021-04-282021-09-26
20222022-05-262022-09-26
20232023-04-142023-09-11
20242024-05-092024-08-31
20252025-04-272025-09-07

Every Fixed Threshold

Fixed thresholds at Koolan
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2395200882
35 C (95 F): Days2334202319
40 C (104 F): Days6320051
90 F (32.2 C): Days2364202153
100 F (37.8 C): Days21820191
0 C (32 F): Ice days (max2361201220
0 C (32 F): Frost days (min11042025104
-10 C (14 F): Days with min114202514
20 C (68 F): Tropical nights (min151202551
25 C (77 F): Days with min1620256
10 mm (0.39 in): Days with 10 mm or more rain331219584
25 mm (0.98 in): Days with 25 mm or more rain13219552

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2003.

Download the Data

  • Data for Koolan threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).